Chapter 10 - Gaseous Exchange online Test

Gaseous Exchange

Quiz

 

1. Which of the following is the primary site for gaseous exchange in humans?
   1.   Alveoli
   2.   Bronchi
   3.   Trachea
   4.   Larynx
2. What is the main function of hemoglobin in the blood?
   1.   To transport nutrients
   2.   To carry oxygen
   3.   To fight infections
   4.   To regulate temperature
3. During inhalation, the diaphragm:
   1.   Contracts and moves downward
   2.   Relaxes and moves upward
   3.   Stays in the same position
   4.   Contracts and moves upward
4. • Which gas is expelled from the body as a waste product of respiration?
   1.   Nitrogen
   2.   Carbon dioxide
   3.   Oxygen
   4.   Methane
5. In plants, gaseous exchange primarily occurs through structures called:
   1.   Chloroplasts
   2.   Stomata
   3.   Xylem
   4.   Phloem
6. • What process describes the movement of gases from an area of higher concentration to an area of lower concentration?
   1.   Osmosis
   2.   Diffusion
   3.   Active transport
   4.   Filtration
7. Which structure in the human respiratory system prevents food from entering the trachea?
   1.   Larynx
   2.   Epiglottis
   3.   Alveoli
   4.   Bronchi
8. What percentage of oxygen is typically found in exhaled air?
   1.   21%
   2.   16%
   3.   10%
   4.   78%
9. The gas exchange in the lungs occurs between the alveoli and the:
   1.   Arteries
   2.   Veins
   3.   Capillaries
   4.   Bronchioles
10. • Which of the following is a respiratory organ in fish?
    1.   Lungs
    2.   Gills
    3.   Skin
    4.   Stomata